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Acquisitions (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012 Pelichem Industrial Cleaning Services, LLC [Member]	May 03, 2011 EDC [Member]
Purchase price allocation
Current assets	$ 1,112	$ 1,316
Property, plant and equipment	4,299	13
Tax deductible goodwill	2,247	1,583
Other intangible assets	1,853	3,075
Total assets acquired	9,511	5,987
Current liabilities	117	1,379
Net assets acquired	9,394	4,608
Cash acquired		8
Net purchase price		$ 4,600

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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